I have this unit, my favorite, please don't hurt it...Here's how to disable zone 2, turn off the red light and get your power back...
First, I recommend you buy another remote. It's the only way to make owning this unit satisfying, trust me.
I bought a factory remote from another unit off e-bay it's a yamaha RAV150, works perfectly, is even woman friendly.
Now, here's the meat and potatoes:
Freshen the batteries in the factory remote (Yamaha RAV228) without this remote you are boned. Give up and piss off until you get it.
Next, Page 101 in your factory manual: Set REC OUT/ZONE2 (round dial on the front panel) to SOURCE REMOTE (point the round dial straight up and leave it there)
Now, get the factory remote (RAV228) and a paperclip ready, as well as your new(old) remote (the one I told you to buy).
Page 88 and 101 in your factory manual: On the factory remote, press an input selector, (pick CD or DVD)...grab your paperclip and press LEARN for AT LEAST 3 SECONDS...!!!
NOW, YOU HAVE 30 SECONDS TO COMPLETE THE PROCESS AND THE CLOCK IS TICKING!!!!! The Japanese are fun.
Press either RIGHT OR LEFT on the four square that has the enter button in the middle until you see "L:AMP"
Now press UP or Down on the same pad until you see "Zone2"
Grab you secondary remote, hold learn for 2 seconds or less, press the button on it you want to dedicate to ALWAYS ONLY BEING USED TO TURN ZONE2 OFF.
Put the remotes NOSE to NOSE and press the STANDBY button on the factory remote.
Now press the the same button you chose on your secondary remote AGAIN to confirm.
Now... Use the secondary remote I told you to buy to turn on a shut down system. As soon as the amp triggers, press the learned button you picked and programmed. ZONE2 should go off immediately. Otherwise you suck, try it again. Works like a champ for me.